Premium External Power Supply 12v 1A (1000mA) AC/DC Camera Adapter,Plug Tip: 1.35mm x 3.5mm x 7mm, for RATV and Network Player for USB HUB and 2.5-inch HDD Enclosure Input: 100-240 V AC 50/60 Hz Output: 12V, 1.0A (1000 mA) Plug Spec: ID: 1.35 mm; OD: 3.5 mm; Length: 7 mm; Cable Length: 110 cm (about 4 ft) AC to DC power supply